34xx TRM Delta G->H notes that the CORE powerdomain has a hardwaresave-and-restore (SAR) control bit for the USBTLL module, similar tothe USBHOST powerdomain SAR bit. Split the existing core_34xx structpowerdomain into two structs, one for ES1 and one for ES2, and add thePWRDM_HAS_HDWR_SAR flag to the ES2 powerdomain.